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Entropy
I would suspect that you need to get the camera closer to the primary. If you are able to hand-hold the camera and put it as close as you can to the focuser. Do this during the day, with the scope pointed at a distant object. If you physically move the camera in and out you should see the focus point. If not, point the scope at a closer object say a couple of hundred meters away, try it again. This time you may get it to focus. Superb focus is not required, just an indication that it is in focus or not.
If the closer object comes to focus, then see where this happens.For a distant (stellar) object the camera will need to move closer still to the primary/secondary. If this isn't possible with the current setup, trial it with the focuser removed. Measure how far from the tube to the camera lens mount. If this is less than the height of the focuser then you either need a shorter focuser, or the primary can be moved closer. It will need to be by the same amount. Moving the primary isn't impossible, but see which way you need to go first, and then by how much. Try and report back.
Gary
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